electron/common/api/atom_bindings.cc
2013-04-22 16:27:52 +08:00

74 lines
2.1 KiB
C++

// Copyright (c) 2013 GitHub, Inc. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "common/api/atom_bindings.h"
#include "base/logging.h"
#include "vendor/node/src/node.h"
namespace atom {
// Defined in atom_extensions.cc.
node::node_module_struct* GetBuiltinModule(const char *name, bool is_browser);
AtomBindings::AtomBindings() {
}
AtomBindings::~AtomBindings() {
}
void AtomBindings::BindTo(v8::Handle<v8::Object> process) {
v8::HandleScope scope;
node::SetMethod(process, "atom_binding", Binding);
}
// static
v8::Handle<v8::Value> AtomBindings::Binding(const v8::Arguments& args) {
v8::HandleScope scope;
v8::Local<v8::String> module = args[0]->ToString();
v8::String::Utf8Value module_v(module);
node::node_module_struct* modp;
v8::Local<v8::Object> process = v8::Context::GetCurrent()->Global()->
Get(v8::String::New("process"))->ToObject();
DCHECK(!process.IsEmpty());
// is_browser = process.__atom_type == 'browser'.
bool is_browser = std::string("browser") == *v8::String::Utf8Value(
process->Get(v8::String::New("__atom_type")));
// Cached in process.__atom_binding_cache.
v8::Local<v8::Object> binding_cache;
v8::Local<v8::String> bc_name = v8::String::New("__atom_binding_cache");
if (process->Has(bc_name)) {
binding_cache = process->Get(bc_name)->ToObject();
DCHECK(!binding_cache.IsEmpty());
} else {
binding_cache = v8::Object::New();
process->Set(bc_name, binding_cache);
}
v8::Local<v8::Object> exports;
if (binding_cache->Has(module)) {
exports = binding_cache->Get(module)->ToObject();
return scope.Close(exports);
}
if ((modp = GetBuiltinModule(*module_v, is_browser)) != NULL) {
exports = v8::Object::New();
// Internal bindings don't have a "module" object,
// only exports.
modp->register_func(exports, v8::Undefined());
binding_cache->Set(module, exports);
return scope.Close(exports);
}
return v8::ThrowException(v8::Exception::Error(
v8::String::New("No such module")));
}
} // namespace atom